风化矿床基本分析样采样长度确定的数理统计法——以滇中地区梅子箐风化壳型钛铁矿为例  

A mathematical statistical method to determine the sampling length of basic analytical sample for weathered deposit:An example of Meiziqing weathered crust type Ti-Fe deposit in Central Yunnan

作　　者：王泽传 赵思传 严城民 让昊[1,2] 朱先敏 李同 朱毅翔 杨成忠 WANG Zechuan;ZHAO Sichuan;YAN Chengmin;RANG Hao;ZHU Xianmin;LI Tong;ZHU Yixiang;YANG Chengzhong(WANG Zechuan Expert Studio,Yunnan Geology&Mining Group Co.,Ltd.,Kunming 650051,Yunnan,China;Yunnan Institute of Geology&Mineral Resources Exploration,Yunnan Geology&Mining Group Co.,Ltd.,Kunming 650051,Yunnan,China;Regional Geology and Mineral Survey Team,Yunnan Bureau of Geology and Mineral Resources,Yuxi 653100,Yunnan,China)

机构地区：[1]云南地矿集团有限公司“王泽传专家工作室”,云南昆明650051 [2]云南地矿集团有限公司地质矿产勘查院,云南昆明650051 [3]云南省地质矿产勘查开发局区域地质矿产调查大队,云南玉溪653100

出　　处：《矿产与地质》2022年第4期893-899,共7页Mineral Resources and Geology

基　　金：云南省地质勘查基金项目“云南省武定县长冲钛铁砂矿普查”(编号:K2015017)资助。

摘　　要：为确定风化矿床在详查、勘探阶段基本分析样的采样长度,对云南省武定县梅子箐风化壳型钛铁矿2个代表性较好的钻孔进行了数理统计。在采样基本长度为1.0m的基础上,换算出样品基本长度为1.5m、2.0m的化学分析结果。据此在单工程中进行了矿体圈定、低品位矿与工业矿划分、各矿层的低品位矿与工业矿的厚度与平均品位的计算。Mathematical statistical method is carried out on two representative drilling holes of weathered crust-type Ti-Fe deposit in Wuding County,Yunnan Province in order to determine the sampling length of basic analysis sample during detailed survey and exploration of weathered deposit.On the basis of the basic sampling length of 1.0 m,the chemical analysis results of the basic sample length of 1.5 m and 2.0 m are converted.The delineation of ore body,the division of low-grade ore and industrial ore,and the calculation of the thickness and average grade of low-grade ore and industrial ore in each ore layer are carried out in a single engineering project.The reasonable sampling length of basic analysis sample is obtained by comparing each prospecting engineering data.In the reconnaissance stage,sampling is generally carried out according to the smaller sampling length in the relevant specifications.According to the reconnaissance result,a reasonable sampling length is obtained through mathematical statistical method,which is used in the detailed investigation and exploration stage.The method is reliable and easy to operate,and can be used in the geological exploration of different kinds of weathered deposits.

关 键 词：钛铁矿 风化壳型矿床 采样长度确定 数理统计法 

分 类 号：P624.4[天文地球—地质矿产勘探]